Steam-turbine.



G. C. N. WALLACE.

STEAM TURBINE. APPLICATION FILED JAN. 20, 1910.

Patented Feb. 21, 1911.

2 SHEETS-SHEET l.

WITNESSES:

I N VEN TOR.

A TTORNE Y.

G. c. N. WALLACE.

STEAM TURBINE. APP:LI'0ATION TILED JAIL-20, 1910.

Patented Feb. 21, 1911.

2 SHEETS-SHEET 2.

Mil

WITNESSES:

INVENTOR. George C. Wallace. BY 3 g 2 2 A T TORNE Y GEORGE C. N. WALLACE, ANDERSON, INDIANA.

STEAIVLTURBINE.

' Specification of Letters Patent.

Patented Feb. 21, 1911.

Application filed January 20, 1910. Serial No. 539,044.

To all whom. it may concern:

Be it known that I, GEORGE (1N. of Anderson, county of Madison, and State of Indiana, have invented a certain new and useful Steam-Turbine; and I do hereby declare that the following'is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which like letters refer to like parts.

WALLACE,

' The object of this invention is to improve theefliciency and powerji of steam turbine engines. To that end I provide. a double turbine wheel having two similar sides or.

passage thereof through two long series of buckets on each half of the wheel.

The full nature of the invention will be understood from the accompanying drawings and the following description and claim:

In the drawings Figure l is a central vertical section of the upper half of the turbine engine longitudinally of the shaft thereof and an elevation of the lower half thereof, the latter being partly broken away. Fig. 2 is a section on the line 2-2 of Fig. 1. Fig. 3 is a section on the line 3-3 of Fig. 1.

The casing consists of the two side portions 10 and an intermediate portion 11. The shaft l2 extends transversely of said casing and upon it. the turbine wheel 13 is mounted, being held in placeby the nuts let. The turbinewheel 13 is a double wheel having two radial flanges 14 somewhat separated from each other and a wide rini15.

The portion 11 of the casing has two par allel flanges 17 that extend inward between the two radial'members 14 of thewheel so as to leave, a slight space between them and the wheel and a considerable space between the two flanges 17 for the passage of the steam which enters through the port 18 formed by adding the cap 19 upon the flange 17. The flanges 17 extend down to what may be termed the hub of the wheel, almost to the shaft and their inner peripheries are curved so that the steam entering in the passage way 19 between them will pass in two opposite directions laterally'into the radial. chamber 20 between the flanges 17 and the parts 14 of the wheel. Into these radial chambers 20 buckets 21 and projecting from the flanges l7- and the latter from the parts 14 of the wheel. steam passes radially outward through the series of buckets 21 and 22, it passes laterally in the opposite direction across the two rims of the wheel through two series of the buckets 23 and 2 1, the former being in the periphery of the two parts of the wheel. and the latter in the internal periphery of the casing. The steam exhausts through any suitable exhaustport 25.

This construction provides an extremely large number of buckets in the wheel of moderate size, there being four series of them extending all about the wheel cylindrically, so that the full effect of the steam during its passage and expansion is obtained. It is noted too, that the steam begins to act near the center of the wheel and thence moves outwardly as it expands.

What I claim as my invention and desire to secure by Letters Patent is:

A turbine wheel including a shaft, a dou ble wheel thereon having two lateral halves orparts with an intermediate peripherally After the I 22 are secured, the former disposed space between them and having.

. flattened peripheral rims,a casing surrounding the peripheries of said wheel provided with "flanges that extend inwardly between the halves of the wheel nearly to the center thereof, means-for introducing steam into the chamber between said flanges, a series of buckets on said flanges and the adjacent radial sides of the two parts of the wheel, another series of buckets on the peripheries of the two parts of the wheel and the adjacent parts of the casing, and a suitable ex- 7 haust port, substantially as setforth.

In witness whereof, I have hereunto affixed my signature in the presence. of the witnesses herein named.

GEORGE C. N. 'VVALLACE. lVitnesses: A. W. DRAKE,

.Jnssn J. GrBBoNs. 

